Thank you for your thoughts friends. I was particularly pleased to hear from Barry TG who despite his own very severe problems still makes time to help others and this is very much appreciated.
Barry and Chris were both at Leicester, so will remember that I asked the guest Oncologist at that meeting at what point, after RT was shown to have failed (ie nadir + 2), further intervention should be considered. He said this was a grey area and it seems this may vary from one patient to another depending on the oncologist and the patient. However, to my simplistic way of thinking, if the the PSA is still coming only from the prostate, it would make sense to try other treatments to eradicate it there before it migrates. If the cancer is shown to have migrated already, then as Barry says, perhaps HT would be appropriate. I would have thought in this latter case it would be better to start the HT earlier rather than wait until it had taken a strong and maybe widespread hold. The question is at what point is a scan helpful to determine where the cancer cells are. With standard scans there can be difficulty in establishing this until the cancer cells become greater and give off more PSA (sometimes). But it may be that the more advanced Choline and 68 Gallium scans can determine where they are earlier and thereby enable appropriate treatment sooner.
Will keep you posted as I am sure there are others in a similar position.
I formed the same opinion as you Barry regarding my consultation with my very nice but inexperienced doctor. But to be fair she did say she would refer my case to a senior doctor. I shall have to see what is suggested but if a way forward is not offered, I will obtain the views of the doctors in Heidelberg on whether a 68 Gallium scan could be really useful at this point.